Wilwood 140-18155-R Forged Narrow Superlite Big Brake Kit Rotor - 6R Front 12.88in 6-Lug Red

The Wilwood 140-18155-R is a Forged Narrow Superlite 6R (FNSL6R) front big brake kit engineered specifically for truck applications, featuring a 12.88-inch rotor and a 6-lug hub configuration with red powder-coated calipers. At the heart of this kit is Wilwood's forged narrow six-piston Superlite 6R caliper — one of the most capable bolt-on brake calipers available for street and performance truck builds.

Each FNSL6R kit is designed application-specifically, ensuring a straightforward installation process and full compatibility with the OEM master cylinder output and ABS systems where equipped. No master cylinder upgrades or brake booster modifications are required for proper pedal feel and stopping performance.

Key Features:

• Forged Narrow Superlite 6R six-piston caliper for maximum clamping force and heat dissipation
• 12.88-inch vented rotor delivers increased swept area and improved thermal capacity over stock brakes
• 6-lug hub pattern engineered for direct bolt-on fitment
• Red powder-coat caliper finish for a bold, custom appearance behind the wheel
• Application-specific engineering ensures simplified installation with no custom fabrication required
• Compatible with OE master cylinder and ABS functions where applicable
• Designed to complement wheel, tire, and suspension upgrades — requires 17-inch or larger wheels for proper clearance
• Available in optional caliper finishes and rotor designs for personalized style

This kit is purpose-built to deliver a significant upgrade in braking capacity for classic Blazer and truck platforms. The combination of the large-diameter rotor and six-piston caliper reduces brake fade during demanding driving conditions while providing the aggressive, high-performance look that complements lowered suspension and aftermarket wheel packages.